QGIS does not create a proper legend for maps with pie charts or circles with variable size. I wrote a program to produce legends in Scalable Vector Format (SVG). In the QGIS Composer, the result can be added to the map as an image. If necessary, the legend can first be modified with a SVG-editor like Inkscape.
Download the program here:
LegendSVG (Windows)
LegendSVG (Linux)
Sorry, this entry is only available in the Dutch language
Sorry, this entry is only available in the Dutch language
Sorry, this entry is only available in the Dutch language
Sorry, this entry is only available in the Dutch language
Sorry, this entry is only available in the Dutch language
Sorry, this entry is only available in the Dutch language
Sorry, this entry is only available in the Dutch language
Sorry, this entry is only available in the Dutch language
